The Simhâsana

अथ सिंहासनम्
गुल्फौ च वृषणस्याधः सीवन्त्याः पार्श्वयोः क्षिपेत् ।
दक्षिणे सव्य-गुल्फं तु दक्ष-गुल्फं तु सव्यके ॥ ५२॥

Atha simhāsanam

Ghulphau cha vrshanasyādhah Sīvantyāh pārśvayoh kshipet Dakshine savyaghulpham tu Dakshaghulpham tu savyake

Press the heels on both sides of the seam of Perineum, in such a way that the left heel touches the right side and the right heel touches the left side of it.